A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

? , Hexane, Heptane, Octane

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

FU, LO, RI, ?

Select the term that will complete the following letter series.
QN, RP, TS, WW, ___ FH

Select the number from among the given options that can replace the question mark (?) in the following series. 

5, 18, 70, 278, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
0.5, 2, 3.5, ? , 6.5

Select the option that will fill in the blank and complete the given series.
CDZ, DGE, EJJ, FMO, GPT___

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

PON, LKJ, GFE, ?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

RS, ZA, HI, ?